Calcareous nannofossil biostratigraphy reveals a continuous depositional record through the Upper Cretaceous‒Paleocene succession in Zagros Basin; southwest Iran (southeastern part of Neo-Tethys), especially Cretaceous‒Paleogene and Danian‒Selandian boundaries. The upper Gurpi Formation lower Pabdeh were investigated. assemblages from these formations are characterized by abundant, diverse mode...

New age data from Sr isotope analysis and both planktonic foraminifera and nannofossils are presented and discussed here for the Upper Eocene–Upper Miocene sedimentary rocks of the Değirmenlik (Kythrea) Group. New dating is also given of some Cretaceous and Pliocene sediments. In a revised stratigraphy the Değirmenlik (Kythrea) Group is divided into ten formations. Different Upper Miocene forma...

Abstract The Nukhul Formation has been a point of controversy until now due to lack index fossils, varied facies modifications, and different time gaps. As result, the calcareous nannofossils exposed Miocene rocks at Wadi Baba, west-central Sinai have studied quantitatively for first time. An important sequence nannofossil bioevents recorded in Formation, including FOs Discoaster druggii , Sphe...

The upper Miocene to Pleistocene Shimajiri Group, composed mainly of siltstone and sandstone, occurs on some the Ryukyu Islands in southwestern Japan. This group is thought have been deposited a shelf-slope fore-arc basin setting before accumulation coral reef deposits (Ryukyu Group). We investigated calcareous nannofossil biostratigraphy Group Offshore Okinawa 1-x well, drilled near northeaste...

Calcareous nannofossil biostratigraphy and carbon-isotope stratigraphy on bulk organics of the middle-upper Eocene Souar Formation (Tunisia) allow for a refined this interval in southwestern Neo-Tethys margin. The represents deepest sedimentary deposits central northern Tunisian Basin was only dated previously by coarse data planktonic foraminifera. Together with our new data, correlation is pr...

Calcareous nannofossils are micrometric calcite platelets secreted by the photosynthetic algae named coccolithophores and incertae sedis. nannoplankton inhabit photic zone from coast to open-ocean have left an abundant fossil record since Triassic. Therefore, they constitute interesting material for geochemical studies although been overlooked in comparison foraminifera. We analyzed manganese d...